Prevalence of myopia and uncorrected myopia among 721 032 schoolchildren in a city-wide vision screening in southern China: the Shantou Myopia Study.
Br J Ophthalmol
; 107(12): 1798-1805, 2023 11 22.
Article
em En
| MEDLINE
| ID: mdl-36198476
ABSTRACT
AIMS:
To explore the prevalence and risk factors for myopia and uncorrected myopia in schoolchildren in southern China.METHODS:
The government-led Shantou Myopia Study was conducted from September 2020 to June 2021. Non-cycloplegic refraction was performed. Uncorrected visual acuity (UCVA) was measured along with presenting visual acuity if participants wore spectacles. Spherical equivalent refraction (SER) is defined as the spherical dioptres added to half of the cylindrical dioptres. Myopia is defined as SER <-0.50 dioptre with UCVA of <20/20 in at least one eye.RESULTS:
This study enrolled 724 828 schoolchildren (77.8% of all schoolchildren in Shantou) from 901 schools. Data from 721 032 schoolchildren (99.5%) were analysed (mean age 11.53±3.13 years, 6-20 years, 373 230 boys and 347 802 girls). Among them, 373 459 (51.8%) had myopia 37.1% of 465 696 children in primary schools, 75.4% of 170 164 children in junior high schools and 84.8% of 85 172 children in senior high schools. The prevalence of myopia increases non-linearly with age. Older age, female and urban living environment were independently associated with myopia prevalence and myopic SER. Among the 373 459 children with myopia, 60.0% had no refractive correction 74.9%, 53.9% and 35.5% in primary, junior high and senior high schools, respectively.CONCLUSION:
The overall prevalence of myopia among schoolchildren in Shantou was 51.8%, higher than the national average in China. The proportion of uncorrected myopia is high, especially in primary schools. Our results indicate the need for public education on eye care among schoolchildren even in a municipal city.Palavras-chave
Texto completo:
1
Coleções:
01-internacional
Base de dados:
MEDLINE
Assunto principal:
Erros de Refração
/
Seleção Visual
/
Miopia
Tipo de estudo:
Diagnostic_studies
/
Prevalence_studies
/
Risk_factors_studies
/
Screening_studies
Limite:
Adolescent
/
Child
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Female
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Humans
/
Male
País/Região como assunto:
Asia
Idioma:
En
Revista:
Br J Ophthalmol
Ano de publicação:
2023
Tipo de documento:
Article